Meet The Bremen Energy Team

Our Staff

Bremen Inc was established in 1995 by Bob and Mary Eipert. 


We have active raters across Kentucky and Southern Indiana with a full staff ready to assist builders, developers and contractors! 

Cheryl Ostrowiak     |      Office Manager

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Bob Eipert      |      Co-Owner 

Bob started in the construction industry in 1987 in Cape Coral, Florida. He gained experience in a variety of areas, including kitchen cabinet design, manufacturing, and installation.


After a move to Carmel, Indiana, Bob and Mary founded Bremen Inc. and started remodeling kitchen and baths. Bremen, Inc. expanded into building high performance homes in 1998 after moving to Berea, KY. 


Throughout his career, Bob has used the most up-to-date building science technology while maintaining focus on a commitment to energy efficiency and comfort. From 2007-2011, Bremen Inc. was committed to building 100% ENERGY STAR Certified Homes as an ENERGY STAR Partner.


Bob became a certified HERS Rater in 2008 and stopped building in 2012 to devote all his time to helping other builders produce more energy efficient homes.  


Bob brings his experience and knowledge as a Rater, builder, and remodeling contractor to each job he inspects and tests.


Colin Purcell      |      Certified HERS Rater

Colin Purcell joined Bremen Energy Auditors in 2018. Colin grew up in Louisville where he lives with his wife and daughter.  Colin graduated from the University of Georgia in 2007 with a degree in Business Administration and Management while being a captain on their national championship tennis team.


After graduation, Colin joined his father, Shawn Purcell’s energy rating business MetroFirst.  Shawn Purcell was the first HERS Rater in the Louisville/Southern Indiana area.  Bremen is proud to have his son as a part of our team. 


Colin enjoys working with builders, homeowners, and construction industry professionals alike to help them navigate their best options for meeting and exceeding their local code requirements to creating better end product.


Teresa Lynch     |      Document Specialist

Teresa joined the Bremen team in January 2020 after spending 12 years as a Non-Inventory Receiver for Amazon. The organizational skills she developed there has made her invaluable to the BEA team. 


Teresa performs energy usage research for appliances and mechanical equipment; provides builders and code officials with code compliance certification; maintains detailed records of each dwelling tested for Quality Assurance while scheduling inspection and testing appointments.

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Sydney Vaugh    |      Field Technician

Sydney joined Bremen in October 2021.  She is a Madison County, KY native that spent 2 1/2 years in Oklahoma after graduation.  Upon her return to KY, Bremen was fortunate to have her become part of the BEA Team.  Sydney is extremally comfortable on job sites and immediately revealed her natural understanding of building science and energy efficiency.  She can be found on a job site working with Abby or Bob.  She has a bright future in energy efficiency industry.  


Mary Eipert     |      Co-Owner

Mary brings a wide range of experience to our team as co-founder and owner. After graduating from the University of South Florida in Tampa, Mary started her career in advertising through yellow page and television advertising agencies. After living and working in Fort Myers, Florida, Indianapolis, Indiana and Dayton, Ohio, Mary moved back to her hometown of Berea, Kentucky with her husband Bob. 


Together, they started building ENERGY STAR Certified and high-performance homes for several years. They founded Bremen Energy Auditors in 2008.  


Mary is accomplished in the building science behind energy efficiency. Assisting and empowering builders in marketing the advantages of a well-built, energy efficient home to future homeowners is her passion.


John Eipert      |      Certified HERS Rater, CPA

John Eipert was raised in the family construction business and began performing energy efficiency improvements in high school. While attending Transylvania University, John became a Certified HERS Rater and began managing contracts with local utility companies. He oversaw energy audits and efficiency improvements of numerous apartment complexes and hundreds of houses across Central Kentucky.


Following graduation, John became a Certified Public Accountant and began conducting audits of local governments and non-profits. In 2020, John rejoined Bremen Energy Auditors and oversaw the certification of over $750,000 of 45L Federal Tax Credits. John oversees all aspects of Bremen’s operations and maintains an extensive system of internal quality control over completed HERS Ratings.


Abigail Eipert     |      Rater Field Inspector

Growing up in the family business, Abby is just as at home on jobsites, real estate closings, crawl spaces and attics as she is in the office and working directly with builders or HVAC Contractors. Her dedication to customer satisfaction is exceptional.  She always takes time to explain the science or testing process to anyone interested.

Abby is a full time RESNET Certified Rater Field Inspector, conducting Blower Door and Duct Blaster testing for HERS Ratings and Energy Code Compliance. She has also mastered air and duct sealing techniques. She brings incredible work ethic, drive and versatility to all she does with the Bremen team.


Cheryl Ostrowiak     |      Office Manager

Cheryl joined our team in 2016 after retiring from Madison County Schools. As Officer Manager, she takes care of most things related to record keeping, builder agreements, Certificates of Insurance, and other office responsibilities. The years of working with high school students has made her a natural at making sure we keep receipts, record mileage, and stay up to date on continuing education.